EP 0517451 A1 19921209 - Laser astigmatism compensation.
Title (en)
Laser astigmatism compensation.
Title (de)
Laserstrahlastigmatismuskompensationslaser.
Title (fr)
Compensation d'astigmatisme pour faisceau.
Publication
Application
Priority
US 70749091 A 19910530
Abstract (en)
In an optical system including a laser diode with astigmatism such that the apparent source position in two orthogonal axes each normal to the beam direction differ, a beam prism expander and a collimating lens positioned between the diode and expander, the collimated lens is positioned relative to the laser such that the radius of curvature of the light beam exiting the beam expander in the two axes is identical. <IMAGE>
IPC 1-7
IPC 8 full level
G02B 13/10 (2006.01); G02B 27/09 (2006.01); G11B 7/125 (2006.01)
CPC (source: EP US)
G02B 13/10 (2013.01 - EP US); G02B 19/0014 (2013.01 - EP US); G02B 19/0052 (2013.01 - EP US); G02B 27/09 (2013.01 - EP US); G02B 27/0972 (2013.01 - EP US); G11B 7/125 (2013.01 - EP US)
Citation (search report)
- [AD] US 4768184 A 19880830 - RENO CHARLES W [US]
- [A] US 4643538 A 19870217 - WILSON SCOTT D [US]
- [A] EP 0310711 A1 19890412 - HITACHI LTD [JP], et al
- [A] US 4410237 A 19831018 - VELDKAMP WILFRID B [US]
- [A] US 4948233 A 19900814 - MARUYAMA KOICHI [JP]
- [A] US 4626102 A 19861202 - STORCK ECKHARD [DE], et al
- [A] US 4872747 A 19891010 - JALKIO JEFFREY A [US], et al
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0517451 A1 19921209; JP H05157985 A 19930625; US 5239414 A 19930824
DOCDB simple family (application)
EP 92304946 A 19920529; JP 13408092 A 19920527; US 70749091 A 19910530